Machine for making horseshoes



'(No Model.) v 3 Sheets-Sheet 1.

Z. V. PURDY.

MACHINE FOR MAKING HORSESHOES.

No. 450,375. Patented Apr. 14,1891.

IQ \D i 3 if (No Model.) 3 Sheets-Sheet 2. z. V. PURDY.

MACHINE FOR. MAKING HORSBSHOES. No. 450,375. PatentedApr. 14, 1891.

(No Model.) a Sheets-=Sheet a. v I

Z. V. PU'RDY. MACHINE FOR MAKING HORSESHOES.-

No. 450,375. Patented AprQl l, 1891.

NTTED STATES ZAOI'IARIAH vQ PURDY,

PATENT ()FFIcE.

OF VIENNA, VIRGINIA.

MACHINE FOR MAKING HORSESHOES.

SPECIFICATION forming part of Letters Patent No. 450,375, dated April14, 1891.

Application filed August 26,1890. Serial No. 368,078. (No model.)

To all whom, it may concern:

Be it known that I, ZAOHARIAH V. PURDY, a citizen .of the United States,residing at Vienna, in the county of Fairfax and State of Virginia, haveinvented certain new and useful Improvements in Machines for Makin gHorse and Mule Shoes; and I do declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to theletters and figures of reference marked thereon, which form a part ofthis specification.

M y invention relates especially to that class of horseshoe-machines inwhich the blank is bent around a stationary block or former by movablejaws, and has for its objects to simplify the construction andoperation, to provide for easy-adj ustments to enable diiferent-sizedshoes to be made on the same machine, to increase the durability of themachine, and to enable the dilferent parts when worn or broken to beconveniently and expeditiously renewed or replaced.

To these ends the invention consists in the construction, arrangement,and combination of parts, as will be hereinafter fully described, andparticularly pointed outin the appended claims.

In the accompanying drawings, which illustrate my invention and form apart of this specification, Figure 1 is a plan view of the machine, oneend being broken away. Fig 2 is a longitudinal vertical section on theline a b, Fig. 1. is a transverse vertical Fig. 0 section on the line 0d, Fig. 1. Fig. 4: is a plan view of one end of the machine with theforoperating the cutters, by which the shoeblanks are separated from thebar, with the My machine is a double machine provided with two sets ofshoe-forming devices, both connected with and operated by a maindriving-shaft, so that two shoes may be formed during each completerevolution of the shaft,

one by each set of devices. The two sets of forming devices are locatedon opposite sides of the driving-shaft and are both alike, so that adescription of one set will answer for both.

The frame of the machine comprises two parallel side rails l 1,connected atboth ends by cross-ties or tables 2 2.

3 designates the driving-shaft, which is mounted centrally andtransversely upon the side rails in suitable boxes or bearings 44. Uponthis shaft, centrally between the side rails, is fixed an eccentric 5,which works in a yoke 6, to which the operating mechanisms of themachine are connected, so as to be reciprocated thereby. The yoke 6 maybe constructed, as usual, to closely fit the eccentric all around; butin order to reduce the friction between the yoke and eccentric to aminimum and also to avoid the rising and falling movements of aclosely-fitting yoke, I construct it, as shown in the drawings, of twovertical parallel bars 6 f, connected by cross bars or plates 9 h. Bythis construction the eccentric, instead of having frictional contactall around, has contact with the yoke only at two diametrically-oppositepoints, and if made sufficiently loose only at one point during themovement of the yoke in either direction.

7 designates a flat plate, whichlies between the side rails 1 1, beingsupported by horizontal ribs or shoulders 8 8 on the inner sides of therails and capable of reciprocating longitudinally thereon. At the centerit has an opening 9, into which the lower end of the yoke 6 projects andfits. The plate 7 and the yoke 6 are connected together by a coupling,which consists of a flat plate 10, from the upper face of which rises avertical standard 11.

The plate 10 is bolted against the under side of the plate 7, thestandard projecting up through the same and bolted to a lug 12 on theyoke.

Upon the upper side of the plate 7 is bolted a plate 13, with a shortseparating-plate 11be-.

tween the two to hold them apart. The plate 13 extends from the yoke 6forward nearly to the end of the plate 7, and the thickness of theseparating-plate is such as to provide suitable space between the frontends of the two plates 7 13 for the bending-jaws 15 15, which arepivoted therein by bolts 10 16, passing through both of said plates. Thejaws are capable of swinging toward and from each other, and arenormally held apart by springs 17 17, set into the front edge of theseparating-plate 14, their free or swinging ends lying against the innersides of the side rails 1 1 of the frame.

18 is the former, upon or around which the shoe-blank is bent to formthe shoe. It is formed on or attached to the end of an arm 19 projectingback from a plate 20, which is adjustably bolted upon the cross-tie ortable 2 of the frame, so as to be capable of being moved forward or backin the line of the length of the machine. The former stands at suchheight that it will enter the space between the two plates 7 13, inwhich the jaws 15 15 are pivoted, the latter passing on either sidethereof in their forward movement.

Cams 21 21 are adjustably set into theside rails of themachine at pointsopposite each other and in line with the former. These are for thepurpose of forcing the jaws 15 15 toward each other to press the ends ofthe blank in and around the former, the said cams being so set andarranged that the inward movement of the jaws will commence as soon asthe widest part of the former is passed. Their size and shape must ofcourse be such as to press the blank tightly against the former and givethe desired exterior finish to the completed shoe. By making these camsadjustable they may be set to compress and thicken the heels of theshoes more or less, as may be desired, and may also be adjusted toformers of different sizes or shapes, whereby the same machine isadapted to make shoes of different sizes or shapes by merely changingthe former and adjusting the cams.

In order to avoid friction between thejaws and the blank in theoperation of bending and forming, the shoe-rollers 22 are loosely setinto open seats formed in the inner sides of the jaws at their frontends. The walls of these roller-seats form something more thansemicircles, so as to hold the rollers and prevent them from escaping,yet exposing enough of their cylindrical surfaces and allowing them toproject beyond the jaws far enough to roll along upon the blank. Byseating them in the jaws in this manner I am enabled to use rollers of alength to fill the entire space between the plates 7 13, and so avoidthe feather-edge liable otherwise to be formed on the shoe. As a furthermeans for retaining therollersin place, they are formed with shortjournals which project into and run in curved guideways 24:, formed inthe plates 7 and 13. The plate 13 is wider than the space between theside rails 1 1, so that its side edges project out and run upon saidrails. It is held down by guide-plates 25, which are bolted upon theside rails with spacing-blocks 26 between, and is held against lateralmove ment by shoulders formed on its upper side, which run against saidguide-plates.

To prevent the blank from twisting or buckling, I mount a roller 27 onthe front end of the plate 13, which roller projects down slightlythrough an opening in the plate, so that the blank is rolled and pressedfiat while being bent by the jaws, and again during the backwardmovement of the parts after the shoe has been formed.

In operating this machine I propose to use blanks previously prepared inthe bar, but not separated from each other, and to adapt it to the useof blanks so prepared I provide a cutter, which is operated by a cam onthe shaft 3. 28 designates the cutter, which is formed, as shown inFigs. 9 and 10, with a vertical stem m, by which it is connected withthe cutter-holder 29. This cutter-holder is formed as shown in Fig. 9,and is connected with the end of a lever 30, fulcrumed in astandard 31,

bolted upon the guide-plate 25. Ithas ahorizontal arm n, in which isformed an elongated opening 0, which receives the stem m of the cutter,the latter being held by a set-screw The opening 0 is elongated for thepurpose of permitting an adjustment of the cutter to cut oif longer orshorter blanks. This adjustment is effected by means of blocks (notshown in the drawings) dropped in or removed from behind the stem of thecutter. On the opposite side of the machine, directly across from thecutter, is a gage 33, adjustable in and out, and held in adjustedposition bya set screw, which sets upon a horizontal arm under theguide-plate 25.

The guide-plate 25 on the side of the machine on which the cutter islocated is made in two parts, (see Fig. 1,) which are sufficientlyseparated to form a feed-opening 34:, through which the blank isintroduced into the machine, either by droppingit down from above or bypushing it in endwise from the side. It is pushed across until it abutsagainst the gage 33, which has been set to correspond with theadjustment of the cutter, so that the middle of the blank will beopposite the center of the former when the cutter descends to Sever theblank from the bar.

The feed opening 34. is extended downward to the plane of the plate 7 bycutting a channel 35 in the side rail 1 in order that the blank may lieflat upon said plate when it is cut off from the bar and in position tobe caught by the former when the plates and jaws carry it forward.

As shown in Fig. 1, the plate 7 extends forlow ward slightly past theend of the former and forms a table or support for the blank when thelatter is placed in the machine. At the center the plate is cut. out toform an open space between it and the former, through which openingtheshoe is discharged from the former upon an inclined chute 36, whichconveys it out and away from the machine.

Fig. 8 illustrates the parts of a double adjustable cam for operatingthe cutters at the two ends of the machine. These cams require to be soadjusted relatively to the levers 30, which carry the cutters, that thelevers will be tripped and the cutter at either end of the machineoperated at the instant when the forming mechanism at that end is at thelimit of its backward movement and while it is at rest, or just as itbegins its forward movement. To provide for effecting such adjustmentquickly and conveniently and for changing the same when required,Iconstruct the cams as shown.

37 is a disk or plate, which is keyed upon the shaft 3.

38 39 are the two cams, (one for each cutter-lever,) which are alsoplaced upon the shaft on opposite sides of the disk 37 and clamped tothe same by clamping-bolts, which pass through bolt-openings in theseveral parts. The bolt-openings in the cams are elongated and curved,as shown, to permit angular adjustment of the cams relatively to thedisk 37 and to each other.

The former is'beveled downward and inwardthat is, it is smaller at itslower face than at its upper-as indicated in Fig. 2. This is for thepurpose of facilitating the removal therefrom of the formed shoe. Assoon as the shoe begins to chill (it is to be here understood that theblanks are to be fed into the machine hot, approximately at a whiteheat) it begins to contract, and this contraction, by reason of thetaper or bevel of the former, tends to draw the shoe off the same and todischarge it therefrom automatically. The chilling of the shoe may beinstantaneously efiected by throwing water upon the same at the instantwhen it is .ready to be removed from the former. A water-supply pipe maybe so connected with the machine that the flow of water will beautomatically controlled and directed upon the shoe at the proper timeby some moving part of the machine. This, however, forms no part of thepresent invention and need not, therefore, be illustrated or furtherdescribed herein.

A designates the bed-frame upon which the machine is mounted.

Power may be applied to the machine through any ordinary or suitabledrivinggear. In the drawings I show a pinion B, mounted in a bracket 0,bolted to the baseframe. The pinion B meshes with a gearwheel D on theend of the shaft 3. On the shaft of the pinion is a wheel or pulley E,

through which power is applied. The bracket may be bolted to the siderail of the machine, if preferred, it being shown bolted to the baseframe merely for convenience of illustration.

Having now described my invention, I claim 1. In a horseshoe-machine,the combination of a fixed former, a revolving shaft and an eccentricthereon, an eccentric yoke, a sliding carriage comprising two platessecured together and to the yoke, and two jaws pivoted between saidplates in position to pass on opposite sides of the former and capableof swinging toward and from each other, substantially as shown anddescribed.

2. In a horseshoe-machine, the combination of a fixed former, arevolving shaft and an eccentric thereon, an eccentric yoke, a slidingcarriage comprising two plates secured together and to the yoke, twojaws pivoted between said plates in position to pass on opposite sidesof the former and capable of swinging toward and from each other, andcam-guides on the frame of the machine to force the jaws toward eachother, substantially as-shown and described.

3. In a horseshoe-machine,the combination, withthe fixed former and withthe movable bending-jaws, of a roller 27, j ournaled in the jaw-carriageand adapted to roll and flatten the blank, substantially as shown anddescribed.

4. In ahorseshoe-machine,the combination, with the driving-shaft and acam thereon, of a lever 30, fulcrumed on the frame of the machine withone end in the path of said cam so as to be vibrated thereby, andacutter on the opposite end of the lever adapted to sever blanks from thebar after the same has been fed into the machine, substantially as shownand described.

5. In a horseshoe-machine, the combination, with the bending devices, ofa former tapering toward its lower or delivery side, substantially asshown and described.

6. In a horseshoe-machine, the combination, with the reciprocatingforming or bending jaws, of a former mounted on the frame of the machineand longitudinally adjustable thereon, scribed.

7. The double adjustable cam herein shown and described, the samecomprising a central substantially as shown and deplate or disk 37,keyed upon the driving-shaft,

ZACI'IARIAH V. PURDY.

\Vitnesses:

H. J. ENNIS, A. DUMMER.

ICC)

